Hello, my digital friend
Here is a song about people in your situation:
'You're still young, that's your fault, there's so much you have to know'
But seriously, I was born some 22 years before you, and I can say:
Don't Panic!
You do not have to be out of your family's house by a given time, you do not have to part company with them just because everybody else seems to do this.
The thing about opportunites is:
You have to make your opportunites, they very rarely come someone's way.
If you, say, want to get into a career as a music business person, read everything you can about it, read interviews (or watch them on youtube etc), and check if there are radiostations or record companies and studios in your area. Dress neat and go there and ask if they have errands to do, you want to learn about the biz. They always are in need of some add-on guys that do the footwork.
Do you know 'Tubular Bells', by Mike Oldfield? That is one classic and extremly well-selling album. He was a little studio technician at a studio, and as hestayed late nights and did the chores they gave him, he recorded that, bit by bit. Look him up on Wikipedia
So, my point is: Go out and start doing your thing. It can be a blessing to have a home base you can come back to, until you take off and fly on your own. Too few people care about family values today.